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64fd2bb1 | 1 | ;;; thai-util.el --- utilities for Thai -*- coding: iso-2022-7bit; -*- |
4ed46869 | 2 | |
1085b551 | 3 | ;; Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2005 |
8f9eda28 KH |
4 | ;; National Institute of Advanced Industrial Science and Technology (AIST) |
5 | ;; Registration Number H14PRO021 | |
32a80346 | 6 | ;; Copyright (C) 2000, 2001 Free Software Foundation, Inc. |
4ed46869 KH |
7 | |
8 | ;; Keywords: mule, multilingual, thai | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
369314dc KH |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
4ed46869 | 26 | |
60370d40 PJ |
27 | ;;; Commentary: |
28 | ||
4ed46869 KH |
29 | ;;; Code: |
30 | ||
31 | ;; Setting information of Thai characters. | |
32 | ||
c595d888 KH |
33 | (defconst thai-category-table (make-category-table)) |
34 | (define-category ?c "Thai consonant" thai-category-table) | |
35 | (define-category ?v "Thai upper/lower vowel" thai-category-table) | |
8f9eda28 KH |
36 | (define-category ?t "Thai tone mark" thai-category-table) |
37 | (define-category ?u "Thai tone mark and upper sign" thai-category-table) | |
38 | (define-category ?I "THAI CHARACTER SARA I" thai-category-table) | |
39 | (define-category ?U "THAI CHARACTER THANTHAKHAT" thai-category-table) | |
c595d888 KH |
40 | |
41 | ;; The general composing rules are as follows: | |
42 | ;; | |
43 | ;; T | |
8f9eda28 KH |
44 | ;; V U V U |
45 | ;; CV -> C, CU -> C, CVT -> C, Cv -> C, CvU -> C | |
c595d888 KH |
46 | ;; v v |
47 | ;; | |
8f9eda28 KH |
48 | ;; where C: consonant, V: vowel upper, v: vowel lower, |
49 | ;; T: tone mark, U: tone mark and upper sign. | |
50 | ;; Special rule: The sign `\e,Tl\e(B' can be put on the vowel `\e,TT\e(B'. | |
c595d888 | 51 | |
8f9eda28 KH |
52 | |
53 | (defvar thai-composition-pattern | |
54 | "\\cc\\(\\cu\\|\\cI\\cU\\|\\cv\\ct?\\)\\|\\cv\\ct\\|\\cI\\cU" | |
c595d888 | 55 | "Regular expression matching a Thai composite sequence.") |
3de54645 | 56 | |
8f9eda28 KH |
57 | (defun thai-self-insert-command (&optional n) |
58 | "Insert the Thai character you type. | |
59 | The character will be composed with the surrounding Thai character | |
60 | if necessary." | |
61 | (interactive "*p") | |
62 | (let ((pos (point)) | |
63 | category-set ch) | |
64 | (self-insert-command n) | |
65 | (or thai-auto-composition-mode | |
66 | (thai-auto-composition (1- (point)) (point) 0)))) | |
67 | ||
4ed46869 KH |
68 | (let ((l '((?\e,T!\e(B consonant "LETTER KO KAI") ; 0xA1 |
69 | (?\e,T"\e(B consonant "LETTER KHO KHAI") ; 0xA2 | |
70 | (?\e,T#\e(B consonant "LETTER KHO KHUAT") ; 0xA3 | |
71 | (?\e,T$\e(B consonant "LETTER KHO KHWAI") ; 0xA4 | |
72 | (?\e,T%\e(B consonant "LETTER KHO KHON") ; 0xA5 | |
73 | (?\e,T&\e(B consonant "LETTER KHO RAKHANG") ; 0xA6 | |
74 | (?\e,T'\e(B consonant "LETTER NGO NGU") ; 0xA7 | |
75 | (?\e,T(\e(B consonant "LETTER CHO CHAN") ; 0xA8 | |
76 | (?\e,T)\e(B consonant "LETTER CHO CHING") ; 0xA9 | |
77 | (?\e,T*\e(B consonant "LETTER CHO CHANG") ; 0xAA | |
78 | (?\e,T+\e(B consonant "LETTER SO SO") ; 0xAB | |
79 | (?\e,T,\e(B consonant "LETTER CHO CHOE") ; 0xAC | |
80 | (?\e,T-\e(B consonant "LETTER YO YING") ; 0xAD | |
81 | (?\e,T.\e(B consonant "LETTER DO CHADA") ; 0xAE | |
82 | (?\e,T/\e(B consonant "LETTER TO PATAK") ; 0xAF | |
83 | (?\e,T0\e(B consonant "LETTER THO THAN") ; 0xB0 | |
84 | (?\e,T1\e(B consonant "LETTER THO NANGMONTHO") ; 0xB1 | |
85 | (?\e,T2\e(B consonant "LETTER THO PHUTHAO") ; 0xB2 | |
86 | (?\e,T3\e(B consonant "LETTER NO NEN") ; 0xB3 | |
87 | (?\e,T4\e(B consonant "LETTER DO DEK") ; 0xB4 | |
88 | (?\e,T5\e(B consonant "LETTER TO TAO") ; 0xB5 | |
89 | (?\e,T6\e(B consonant "LETTER THO THUNG") ; 0xB6 | |
90 | (?\e,T7\e(B consonant "LETTER THO THAHAN") ; 0xB7 | |
91 | (?\e,T8\e(B consonant "LETTER THO THONG") ; 0xB8 | |
92 | (?\e,T9\e(B consonant "LETTER NO NU") ; 0xB9 | |
93 | (?\e,T:\e(B consonant "LETTER BO BAIMAI") ; 0xBA | |
94 | (?\e,T;\e(B consonant "LETTER PO PLA") ; 0xBB | |
95 | (?\e,T<\e(B consonant "LETTER PHO PHUNG") ; 0xBC | |
96 | (?\e,T=\e(B consonant "LETTER FO FA") ; 0xBD | |
97 | (?\e,T>\e(B consonant "LETTER PHO PHAN") ; 0xBE | |
98 | (?\e,T?\e(B consonant "LETTER FO FAN") ; 0xBF | |
99 | (?\e,T@\e(B consonant "LETTER PHO SAMPHAO") ; 0xC0 | |
100 | (?\e,TA\e(B consonant "LETTER MO MA") ; 0xC1 | |
101 | (?\e,TB\e(B consonant "LETTER YO YAK") ; 0xC2 | |
102 | (?\e,TC\e(B consonant "LETTER RO RUA") ; 0xC3 | |
103 | (?\e,TD\e(B vowel-base "LETTER RU (Pali vowel letter)") ; 0xC4 | |
104 | (?\e,TE\e(B consonant "LETTER LO LING") ; 0xC5 | |
105 | (?\e,TF\e(B vowel-base "LETTER LU (Pali vowel letter)") ; 0xC6 | |
106 | (?\e,TG\e(B consonant "LETTER WO WAEN") ; 0xC7 | |
107 | (?\e,TH\e(B consonant "LETTER SO SALA") ; 0xC8 | |
108 | (?\e,TI\e(B consonant "LETTER SO RUSI") ; 0xC9 | |
109 | (?\e,TJ\e(B consonant "LETTER SO SUA") ; 0xCA | |
110 | (?\e,TK\e(B consonant "LETTER HO HIP") ; 0xCB | |
111 | (?\e,TL\e(B consonant "LETTER LO CHULA") ; 0xCC | |
112 | (?\e,TM\e(B consonant "LETTER O ANG") ; 0xCD | |
113 | (?\e,TN\e(B consonant "LETTER HO NOK HUK") ; 0xCE | |
114 | (?\e,TO\e(B special "PAI YAN NOI (abbreviation)") ; 0xCF | |
115 | (?\e,TP\e(B vowel-base "VOWEL SIGN SARA A") ; 0xD0 | |
116 | (?\e,TQ\e(B vowel-upper "VOWEL SIGN MAI HAN-AKAT N/S-T") ; 0xD1 | |
117 | (?\e,TR\e(B vowel-base "VOWEL SIGN SARA AA") ; 0xD2 | |
118 | (?\e,TS\e(B vowel-base "VOWEL SIGN SARA AM") ; 0xD3 | |
119 | (?\e,TT\e(B vowel-upper "VOWEL SIGN SARA I N/S-T") ; 0xD4 | |
120 | (?\e,TU\e(B vowel-upper "VOWEL SIGN SARA II N/S-T") ; 0xD5 | |
121 | (?\e,TV\e(B vowel-upper "VOWEL SIGN SARA UE N/S-T") ; 0xD6 | |
122 | (?\e,TW\e(B vowel-upper "VOWEL SIGN SARA UEE N/S-T") ; 0xD7 | |
123 | (?\e,TX\e(B vowel-lower "VOWEL SIGN SARA U N/S-B") ; 0xD8 | |
124 | (?\e,TY\e(B vowel-lower "VOWEL SIGN SARA UU N/S-B") ; 0xD9 | |
125 | (?\e,TZ\e(B vowel-lower "VOWEL SIGN PHINTHU N/S-B (Pali virama)") ; 0xDA | |
126 | (?\e,T[\e(B invalid nil) ; 0xDA | |
127 | (?\e,T\\e(B invalid nil) ; 0xDC | |
128 | (?\e,T]\e(B invalid nil) ; 0xDC | |
129 | (?\e,T^\e(B invalid nil) ; 0xDC | |
130 | (?\e,T_\e(B special "BAHT SIGN (currency symbol)") ; 0xDF | |
131 | (?\e,T`\e(B vowel-base "VOWEL SIGN SARA E") ; 0xE0 | |
132 | (?\e,Ta\e(B vowel-base "VOWEL SIGN SARA AE") ; 0xE1 | |
133 | (?\e,Tb\e(B vowel-base "VOWEL SIGN SARA O") ; 0xE2 | |
134 | (?\e,Tc\e(B vowel-base "VOWEL SIGN SARA MAI MUAN") ; 0xE3 | |
135 | (?\e,Td\e(B vowel-base "VOWEL SIGN SARA MAI MALAI") ; 0xE4 | |
136 | (?\e,Te\e(B vowel-base "LAK KHANG YAO") ; 0xE5 | |
137 | (?\e,Tf\e(B special "MAI YAMOK (repetion)") ; 0xE6 | |
8f9eda28 | 138 | (?\e,Tg\e(B sign-upper "VOWEL SIGN MAI TAI KHU N/S-T") ; 0xE7 |
4ed46869 KH |
139 | (?\e,Th\e(B tone "TONE MAI EK N/S-T") ; 0xE8 |
140 | (?\e,Ti\e(B tone "TONE MAI THO N/S-T") ; 0xE9 | |
141 | (?\e,Tj\e(B tone "TONE MAI TRI N/S-T") ; 0xEA | |
142 | (?\e,Tk\e(B tone "TONE MAI CHATTAWA N/S-T") ; 0xEB | |
8f9eda28 KH |
143 | (?\e,Tl\e(B sign-upper "THANTHAKHAT N/S-T (cancellation mark)") ; 0xEC |
144 | (?\e,Tm\e(B sign-upper "NIKKHAHIT N/S-T (final nasal)") ; 0xED | |
145 | (?\e,Tn\e(B sign-upper "YAMAKKAN N/S-T") ; 0xEE | |
4ed46869 KH |
146 | (?\e,To\e(B special "FONRMAN") ; 0xEF |
147 | (?\e,Tp\e(B special "DIGIT ZERO") ; 0xF0 | |
148 | (?\e,Tq\e(B special "DIGIT ONE") ; 0xF1 | |
149 | (?\e,Tr\e(B special "DIGIT TWO") ; 0xF2 | |
150 | (?\e,Ts\e(B special "DIGIT THREE") ; 0xF3 | |
151 | (?\e,Tt\e(B special "DIGIT FOUR") ; 0xF4 | |
152 | (?\e,Tu\e(B special "DIGIT FIVE") ; 0xF5 | |
153 | (?\e,Tv\e(B special "DIGIT SIX") ; 0xF6 | |
154 | (?\e,Tw\e(B special "DIGIT SEVEN") ; 0xF7 | |
155 | (?\e,Tx\e(B special "DIGIT EIGHT") ; 0xF8 | |
156 | (?\e,Ty\e(B special "DIGIT NINE") ; 0xF9 | |
157 | (?\e,Tz\e(B special "ANGKHANKHU (ellipsis)") ; 0xFA | |
158 | (?\e,T{\e(B special "KHOMUT (beginning of religious texts)") ; 0xFB | |
159 | (?\e,T|\e(B invalid nil) ; 0xFC | |
160 | (?\e,T}\e(B invalid nil) ; 0xFD | |
161 | (?\e,T~\e(B invalid nil) ; 0xFE | |
2c974b15 DL |
162 | |
163 | ;; Unicode equivalents | |
164 | (?\e$,1Ba\e(B consonant "LETTER KO KAI") | |
165 | (?\e$,1Bb\e(B consonant "LETTER KHO KHAI") | |
166 | (?\e$,1Bc\e(B consonant "LETTER KHO KHUAT") | |
167 | (?\e$,1Bd\e(B consonant "LETTER KHO KHWAI") | |
168 | (?\e$,1Be\e(B consonant "LETTER KHO KHON") | |
169 | (?\e$,1Bf\e(B consonant "LETTER KHO RAKHANG") | |
170 | (?\e$,1Bg\e(B consonant "LETTER NGO NGU") | |
171 | (?\e$,1Bh\e(B consonant "LETTER CHO CHAN") | |
172 | (?\e$,1Bi\e(B consonant "LETTER CHO CHING") | |
173 | (?\e$,1Bj\e(B consonant "LETTER CHO CHANG") | |
174 | (?\e$,1Bk\e(B consonant "LETTER SO SO") | |
175 | (?\e$,1Bl\e(B consonant "LETTER CHO CHOE") | |
176 | (?\e$,1Bm\e(B consonant "LETTER YO YING") | |
177 | (?\e$,1Bn\e(B consonant "LETTER DO CHADA") | |
178 | (?\e$,1Bo\e(B consonant "LETTER TO PATAK") | |
179 | (?\e$,1Bp\e(B consonant "LETTER THO THAN") | |
180 | (?\e$,1Bq\e(B consonant "LETTER THO NANGMONTHO") | |
181 | (?\e$,1Br\e(B consonant "LETTER THO PHUTHAO") | |
182 | (?\e$,1Bs\e(B consonant "LETTER NO NEN") | |
183 | (?\e$,1Bt\e(B consonant "LETTER DO DEK") | |
184 | (?\e$,1Bu\e(B consonant "LETTER TO TAO") | |
185 | (?\e$,1Bv\e(B consonant "LETTER THO THUNG") | |
186 | (?\e$,1Bw\e(B consonant "LETTER THO THAHAN") | |
187 | (?\e$,1Bx\e(B consonant "LETTER THO THONG") | |
188 | (?\e$,1By\e(B consonant "LETTER NO NU") | |
189 | (?\e$,1Bz\e(B consonant "LETTER BO BAIMAI") | |
190 | (?\e$,1B{\e(B consonant "LETTER PO PLA") | |
191 | (?\e$,1B|\e(B consonant "LETTER PHO PHUNG") | |
192 | (?\e$,1B}\e(B consonant "LETTER FO FA") | |
193 | (?\e$,1B~\e(B consonant "LETTER PHO PHAN") | |
194 | (?\e$,1B\7f\e(B consonant "LETTER FO FAN") | |
195 | (?\e$,1C \e(B consonant "LETTER PHO SAMPHAO") | |
196 | (?\e$,1C!\e(B consonant "LETTER MO MA") | |
197 | (?\e$,1C"\e(B consonant "LETTER YO YAK") | |
198 | (?\e$,1C#\e(B consonant "LETTER RO RUA") | |
199 | (?\e$,1C$\e(B vowel-base "LETTER RU (Pali vowel letter)") | |
200 | (?\e$,1C%\e(B consonant "LETTER LO LING") | |
201 | (?\e$,1C&\e(B vowel-base "LETTER LU (Pali vowel letter)") | |
202 | (?\e$,1C'\e(B consonant "LETTER WO WAEN") | |
203 | (?\e$,1C(\e(B consonant "LETTER SO SALA") | |
204 | (?\e$,1C)\e(B consonant "LETTER SO RUSI") | |
205 | (?\e$,1C*\e(B consonant "LETTER SO SUA") | |
206 | (?\e$,1C+\e(B consonant "LETTER HO HIP") | |
207 | (?\e$,1C,\e(B consonant "LETTER LO CHULA") | |
208 | (?\e$,1C-\e(B consonant "LETTER O ANG") | |
209 | (?\e$,1C.\e(B consonant "LETTER HO NOK HUK") | |
210 | (?\e$,1C/\e(B special "PAI YAN NOI (abbreviation)") | |
211 | (?\e$,1C0\e(B vowel-base "VOWEL SIGN SARA A") | |
212 | (?\e$,1C1\e(B vowel-upper "VOWEL SIGN MAI HAN-AKAT N/S-T") | |
213 | (?\e$,1C2\e(B vowel-base "VOWEL SIGN SARA AA") | |
214 | (?\e$,1C3\e(B vowel-base "VOWEL SIGN SARA AM") | |
215 | (?\e$,1C4\e(B vowel-upper "VOWEL SIGN SARA I N/S-T") | |
216 | (?\e$,1C5\e(B vowel-upper "VOWEL SIGN SARA II N/S-T") | |
217 | (?\e$,1C6\e(B vowel-upper "VOWEL SIGN SARA UE N/S-T") | |
218 | (?\e$,1C7\e(B vowel-upper "VOWEL SIGN SARA UEE N/S-T") | |
219 | (?\e$,1C8\e(B vowel-lower "VOWEL SIGN SARA U N/S-B") | |
220 | (?\e$,1C9\e(B vowel-lower "VOWEL SIGN SARA UU N/S-B") | |
221 | (?\e$,1C:\e(B vowel-lower "VOWEL SIGN PHINTHU N/S-B (Pali virama)") | |
222 | (?\e$,1C?\e(B special "BAHT SIGN (currency symbol)") | |
223 | (?\e$,1C@\e(B vowel-base "VOWEL SIGN SARA E") | |
224 | (?\e$,1CA\e(B vowel-base "VOWEL SIGN SARA AE") | |
225 | (?\e$,1CB\e(B vowel-base "VOWEL SIGN SARA O") | |
226 | (?\e$,1CC\e(B vowel-base "VOWEL SIGN SARA MAI MUAN") | |
227 | (?\e$,1CD\e(B vowel-base "VOWEL SIGN SARA MAI MALAI") | |
228 | (?\e$,1CE\e(B vowel-base "LAK KHANG YAO") | |
229 | (?\e$,1CF\e(B special "MAI YAMOK (repetion)") | |
8f9eda28 | 230 | (?\e$,1CG\e(B sign-upper "VOWEL SIGN MAI TAI KHU N/S-T") |
2c974b15 DL |
231 | (?\e$,1CH\e(B tone "TONE MAI EK N/S-T") |
232 | (?\e$,1CI\e(B tone "TONE MAI THO N/S-T") | |
233 | (?\e$,1CJ\e(B tone "TONE MAI TRI N/S-T") | |
234 | (?\e$,1CK\e(B tone "TONE MAI CHATTAWA N/S-T") | |
8f9eda28 KH |
235 | (?\e$,1CL\e(B sign-upper "THANTHAKHAT N/S-T (cancellation mark)") |
236 | (?\e$,1CM\e(B sign-upper "NIKKHAHIT N/S-T (final nasal)") | |
237 | (?\e$,1CN\e(B sign-upper "YAMAKKAN N/S-T") | |
2c974b15 DL |
238 | (?\e$,1CO\e(B special "FONRMAN") |
239 | (?\e$,1CP\e(B special "DIGIT ZERO") | |
240 | (?\e$,1CQ\e(B special "DIGIT ONE") | |
241 | (?\e$,1CR\e(B special "DIGIT TWO") | |
242 | (?\e$,1CS\e(B special "DIGIT THREE") | |
243 | (?\e$,1CT\e(B special "DIGIT FOUR") | |
244 | (?\e$,1CU\e(B special "DIGIT FIVE") | |
245 | (?\e$,1CV\e(B special "DIGIT SIX") | |
246 | (?\e$,1CW\e(B special "DIGIT SEVEN") | |
247 | (?\e$,1CX\e(B special "DIGIT EIGHT") | |
248 | (?\e$,1CY\e(B special "DIGIT NINE") | |
249 | (?\e$,1CZ\e(B special "ANGKHANKHU (ellipsis)") | |
250 | (?\e$,1C[\e(B special "KHOMUT (beginning of religious texts)") | |
4ed46869 KH |
251 | )) |
252 | elm) | |
253 | (while l | |
c595d888 KH |
254 | (setq elm (car l) l (cdr l)) |
255 | (let ((char (car elm)) | |
256 | (ptype (nth 1 elm))) | |
257 | (put-char-code-property char 'phonetic-type ptype) | |
258 | (cond ((eq ptype 'consonant) | |
8f9eda28 KH |
259 | (modify-category-entry char ?c thai-category-table) |
260 | (global-set-key (vector char) 'thai-self-insert-command)) | |
c595d888 | 261 | ((memq ptype '(vowel-upper vowel-lower)) |
8f9eda28 KH |
262 | (modify-category-entry char ?v thai-category-table) |
263 | (if (or (= char ?\e,TT\e(B) (= char ?\e$,1C4\e(B)) | |
264 | ;; Give category `I' to "SARA I". | |
265 | (modify-category-entry char ?I thai-category-table)) | |
266 | (global-set-key (vector char) 'thai-self-insert-command)) | |
c595d888 | 267 | ((eq ptype 'tone) |
8f9eda28 KH |
268 | (modify-category-entry char ?t thai-category-table) |
269 | (modify-category-entry char ?u thai-category-table) | |
270 | (global-set-key (vector char) 'thai-self-insert-command)) | |
271 | ((eq ptype 'sign-upper) | |
272 | (modify-category-entry char ?u thai-category-table) | |
273 | (if (or (= char ?\e,Tl\e(B) (= char ?\e$,1CL\e(B)) | |
274 | ;; Give category `U' to "THANTHAKHAT". | |
275 | (modify-category-entry char ?U thai-category-table)) | |
276 | (global-set-key (vector char) 'thai-self-insert-command))) | |
c595d888 | 277 | (put-char-code-property char 'name (nth 2 elm))))) |
3de54645 | 278 | |
8f9eda28 KH |
279 | (defun thai-compose-syllable (beg end &optional category-set string) |
280 | (or category-set | |
c92164e1 | 281 | (setq category-set |
8f9eda28 KH |
282 | (char-category-set (if string (aref string beg) (char-after beg))))) |
283 | (if (aref category-set ?c) | |
284 | ;; Starting with a consonant. We do relative composition. | |
285 | (if string | |
286 | (compose-string string beg end) | |
287 | (compose-region beg end)) | |
288 | ;; Vowel tone sequence. | |
289 | (if string | |
c92164e1 | 290 | (compose-string string beg end (list (aref string beg) '(Bc . Bc) |
8f9eda28 | 291 | (aref string (1+ beg)))) |
c92164e1 | 292 | (compose-region beg end (list (char-after beg) '(Bc . Bc) |
8f9eda28 KH |
293 | (char-after (1+ beg)))))) |
294 | (- end beg)) | |
295 | ||
4ed46869 KH |
296 | ;;;###autoload |
297 | (defun thai-compose-region (beg end) | |
298 | "Compose Thai characters in the region. | |
299 | When called from a program, expects two arguments, | |
300 | positions (integers or markers) specifying the region." | |
301 | (interactive "r") | |
8f9eda28 KH |
302 | (let ((pos (point))) |
303 | (save-restriction | |
304 | (narrow-to-region beg end) | |
305 | (goto-char (point-min)) | |
306 | (with-category-table thai-category-table | |
307 | (while (re-search-forward thai-composition-pattern nil t) | |
308 | (setq beg (match-beginning 0) end (match-end 0)) | |
309 | (if (and (> pos beg) (< pos end)) | |
310 | (setq pos end)) | |
311 | (thai-compose-syllable beg end | |
312 | (char-category-set (char-after beg)))))) | |
313 | (goto-char pos))) | |
4ed46869 | 314 | |
0a57cf51 KH |
315 | ;;;###autoload |
316 | (defun thai-compose-string (string) | |
317 | "Compose Thai characters in STRING and return the resulting string." | |
c595d888 KH |
318 | (with-category-table thai-category-table |
319 | (let ((idx 0)) | |
320 | (while (setq idx (string-match thai-composition-pattern string idx)) | |
8f9eda28 | 321 | (thai-compose-syllable idx (match-end 0) nil string) |
c595d888 KH |
322 | (setq idx (match-end 0))))) |
323 | string) | |
a1506d29 | 324 | |
4ed46869 KH |
325 | ;;;###autoload |
326 | (defun thai-compose-buffer () | |
327 | "Compose Thai characters in the current buffer." | |
328 | (interactive) | |
329 | (thai-compose-region (point-min) (point-max))) | |
330 | ||
331 | ;;;###autoload | |
332 | (defun thai-post-read-conversion (len) | |
c595d888 KH |
333 | (thai-compose-region (point) (+ (point) len)) |
334 | len) | |
4ed46869 KH |
335 | |
336 | ;;;###autoload | |
c595d888 KH |
337 | (defun thai-composition-function (from to pattern &optional string) |
338 | "Compose Thai text in the region FROM and TO. | |
339 | The text matches the regular expression PATTERN. | |
340 | Optional 4th argument STRING, if non-nil, is a string containing text | |
341 | to compose. | |
342 | ||
f81e6c49 | 343 | The return value is number of composed characters." |
8f9eda28 KH |
344 | (when (and (not thai-auto-composition-mode) |
345 | (< (1+ from) to)) | |
346 | (with-category-table thai-category-table | |
347 | (if string | |
348 | (if (eq (string-match thai-composition-pattern string from) from) | |
349 | (thai-compose-syllable from (match-end 0) nil string)) | |
c92164e1 | 350 | (if (save-excursion |
8f9eda28 KH |
351 | (goto-char from) |
352 | (and (looking-at thai-composition-pattern) | |
353 | (setq to (match-end 0)))) | |
354 | (thai-compose-syllable from to)))))) | |
355 | ||
356 | (defun thai-auto-composition (beg end len) | |
357 | (with-category-table thai-category-table | |
358 | (let (category-set) | |
359 | (while (and (> beg (point-min)) | |
360 | (setq category-set (char-category-set (char-after (1- beg)))) | |
361 | (or (aref category-set ?v) (aref category-set ?u))) | |
362 | (setq beg (1- beg))) | |
363 | (if (and (> beg (point-min)) | |
364 | (aref (char-category-set (char-after (1- beg))) ?c)) | |
365 | (setq beg (1- beg))) | |
366 | (while (and (< end (point-max)) | |
367 | (setq category-set (char-category-set (char-after end))) | |
368 | (or (aref category-set ?v) (aref category-set ?u))) | |
369 | (setq end (1+ end))) | |
370 | (if (< beg end) | |
371 | (thai-compose-region beg end))))) | |
372 | ||
373 | (put 'thai-auto-composition-mode 'permanent-local t) | |
374 | ||
375 | ;;;###autoload | |
376 | (define-minor-mode thai-auto-composition-mode | |
377 | "Minor mode for automatically correct Thai character composition." | |
c92164e1 | 378 | :group 'mule |
8f9eda28 KH |
379 | (cond ((null thai-auto-composition-mode) |
380 | (remove-hook 'after-change-functions 'thai-auto-composition)) | |
381 | (t | |
382 | (add-hook 'after-change-functions 'thai-auto-composition)))) | |
4ed46869 | 383 | |
1085b551 KH |
384 | ;; Thai-word-mode requires functions in the feature `thai-word'. |
385 | (require 'thai-word) | |
386 | ||
387 | (defvar thai-word-mode-map | |
388 | (let ((map (make-sparse-keymap))) | |
389 | (define-key map [remap forward-word] 'thai-forward-word) | |
390 | (define-key map [remap backward-word] 'thai-backward-word) | |
391 | (define-key map [remap kill-word] 'thai-kill-word) | |
392 | (define-key map [remap backward-kill-word] 'thai-backward-kill-word) | |
393 | (define-key map [remap transpose-words] 'thai-transpose-words) | |
394 | map) | |
395 | "Keymap for `thai-word-mode'.") | |
396 | ||
397 | (define-minor-mode thai-word-mode | |
398 | "Minor mode to make word-oriented commands aware of Thai words. | |
399 | The commands affected are \\[forward-word], \\[backward-word], \\[kill-word], \\[backward-kill-word], \\[transpose-words], and \\[fill-paragraph]." | |
c92164e1 | 400 | :global t :group 'mule |
1085b551 KH |
401 | (cond (thai-word-mode |
402 | ;; This enables linebreak between Thai characters. | |
403 | (modify-category-entry (make-char 'thai-tis620) ?|) | |
404 | ;; This enables linebreak at a Thai word boundary. | |
405 | (put-charset-property 'thai-tis620 'fill-find-break-point-function | |
406 | 'thai-fill-find-break-point)) | |
407 | (t | |
408 | (modify-category-entry (make-char 'thai-tis620) ?| nil t) | |
409 | (put-charset-property 'thai-tis620 'fill-find-break-point-function | |
410 | nil)))) | |
411 | ||
412 | ;; Function to call on entering the Thai language environment. | |
413 | (defun setup-thai-language-environment-internal () | |
414 | (thai-word-mode 1)) | |
415 | ||
416 | ;; Function to call on exiting the Thai language environment. | |
417 | (defun exit-thai-language-environment-internal () | |
418 | (thai-word-mode -1)) | |
419 | ||
4ed46869 | 420 | ;; |
650e8505 | 421 | (provide 'thai-util) |
4ed46869 | 422 | |
ab5796a9 | 423 | ;;; arch-tag: 59425d6a-8cf9-4e06-a6ab-8ab7dc7a7a97 |
4ed46869 | 424 | ;;; thai-util.el ends here |